Home / 457,967.40-687,002.30-142,421.80

Finding the Fourth Proportional to 457,967.40, 687,002.30 and 142,421.80

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Solution

The fourth proportional to 457,967.40, 687,002.30 and 142,421.80 is: 213,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,967.40 : 687,002.30 = 142,421.80 : x
  2. Step 2: Convert to fraction form
    457,967.40/687,002.30 = 142,421.80/x
  3. Step 3: Cross multiply
    457,967.40x = 687,002.30 × 142,421.80
  4. Step 4: Simplify right side
    457,967.40x = 97,844,104,170.14
  5. Step 5: Solve for x
    x = 97,844,104,170.14/457,967.40
  6. Step 6: Final answer
    x = 213,648.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.